Improvement in stop-cocks for steam and liquids



dilated'. tapes @aient @twine JOSEPH BREEDEN, OF BIRMINGHAM, ENGLAND.

Letters Patent No. 101,977, dated April 19, 1870; patented in England December 2l, `1868.

IMPROVEMENT IN STOP-COCKS FOR STEAM AND LIQUIDS.

The Schedule referred to in these Letters Patent and mking part of the same.

To all to whom i t may concern -the same is to be performed, to beparticularly described and ascertained in and by the following state- 4 ment thereof', that is to say:

My invention consists in constructing and arranging the parts of taps or valves essentially in the following manner:

The body of' the tap or valve consists of a chamber in which a conical valve-seat, having its greatest diameter downward, is formed.

The lower division of the said body of thetap communicates with the ingress-pipe and the upper division wit-l1 the egress-pipe.

IVorking on the valve-seat is a conical valve, opening downward. The spindle of the conical valve works in a tube on the bottom ofthe lower division of the body of the tap, and a coiled spring on the spindle raises the said valve and keeps it to its bearing on the conical seat described. The pressure of the liquid steam or gas also tends to raise the valve and press it onto its seat.

In the top or 'body of 4the tap is an opening from which a tube depends. The said tube is screwed within, anda screwyrod, with a hand-wheel or other handle at its top, rises and falls by a rotary motion in the said tube.

When the handle is so turned as to depress the rod, its lower end `presses upon and depresses the valve, and a communication is thereby openedbe,v

tween the ingress and egress-pipes.

By reversing the motion of the handle, the valve no longer pressed from its seat, is raised thereto by the spring, and the communication between the iugress and egress-pipes is closed.

The motion ofthe screwed rod and valve downward is limited by the spindle of the valve, and the motion of the said rod `upward is limited by its enviarged lower end coming against the lower edge of the screwed tube.

vThe valve is guided in its motion by three or other number of upright guides, situated near its periphery, working in a short tube surmounting the valve-seat.

Having explained the nature of my invention, I will proceed to describe, with reference to theaccompanying drawings, thc manner in which the same is to be performed.

Figures 1 and 2 represent vertical sections of a tap or valve, constructed according to my invention, suited for regulating the passage of steam, and also adapted to regulate the passage of hot and cold water, fig. l representing the tap closed, and'fg. 2, the tap o Jen.

1The same lettersfo'f reference indicate the same parts in both igures'.

a is thefbody of the tap, and

h c are the egress and ingress-pipes, opening respectively into the upper and lower parts of the said body, as represented.

d is the internal conical'valve-seat, situated between the upper and lower divisions of the body a.

e is a solid conical valve, opening downward.

f2 is the lower spindle of the valve, which works in the tube g atthe bottom of the body a.

The part g is screwed to the bottom of the body in the manner represented.

vBy means of the coiled spring lt around the extef rior of the pipe g, the valve e is kept to its bearing on the conical seat d, the pressure of the liquid bearing on the under side of the' said valve also tending to raise it and press it to its seat.

l is a rod having a screw on its exterior, which works in a hollow screw in the tubular part or barrel l.' of the tap.

The upper part of .the rod o' works through a stufiingbox, l, and the said rod is turned by a handle, m, (or hand-wheel,) at top.

The top of the barrel k is closed, and the stuffingbox l held in its place by the screw-cap a.

The bottom l2 of the rod t' is solid, and bears against the flat upper face of the valve.

The valve e is guided in its motion partly by the spindle f2, and, in addition, it is provided, on its npper face, with three or more upright guides, j, situated near its periphery, and working in the tube, at d2, above the valve-seat d.

The conical valve, thus constructed and guided, is especially adapted to regulate the passage of steam, although, as above stated, it may also be used for regulating the passage of liquids.

vWhen the handle an. is turned so as to depress the screwed rod l, the lower part t2 presses upon and depresses the valve e from its seat d, as represented in lig. 2, and opens the tap, the liquid passing from the ingress pipe c, through the valve-seat d, to the egresspipe l), as indicated by the arrows.

As the valve e descends, its'motion is limited by the spindle f2 coming against the bottom of the tube g, in which it works;

By reversing the motion of the handle an, the bottom tubular end i2 of the rod tis withdrawn from the valve e, when .the said valve is raised to its seat d by the spring h, assisted by the pressure of the liquid, as represented in Iig. 1, when thetap is closed. The upward motion of the screwed vrod i is limited valve c f f2, constructed as described, with the valveseat d d2, screw-rod fi ft2, tube g, and coiled spring 7i,

substantially as andV for the purposes shown and set forth.

JOSEPH BREEDEN. [11. s]

Witnesses g GEORGE SHAW, 7 Cannon streetfBi/rmingham.

RICHARD SKERRETT, 

